Pbnch



Filed Aug.

l'ne

INVENTOR ATTORNEY Patented Jan. 27, 1931 UNITED STATES PATENT OFFICE HERMAN SCHULTZ, OF RACINE, WISCONSIN ramon. snanrmmn.

Application led August f5, 1929. Serial No. 383,738.

. l tention on the-part of the individual Inaking use oi the device.

A further object is to provlde a motor driven sharpening device which may 1f desired have means for completing the motor circuit by manual operation, the circuit including a switch of any standard or well known type. a

With the foregoing and other objects in view, the invention consists in the novel construction and arrangement of elements disclosed, it being understood that modifications may be made within the scope of the claim without departing from the spirit of the invention.

ln the drawings forming part of this application Figure 1 is a view of the device in end elevation.

Figure 2 is a view in a portion broken away.

Figure 3 is a view in vertical transverse section, on line 3-3 of Figure 2.

Figure 4 is partly in top plan and partly in section, the section beingon line L- o'f Figure 2.

Figure 5 is a diagrammatic view of the circuit for the motor, and the controlling means therefor.

. Any suitable electrical motor may be employed for the purpose herein indicated and in Figure 2 a motor illustrated conventionally is designated at 10, the armatureshaft thereof being shown at l1. The shaft 11 of the motor imparts movement to the rotary 50 cutting or shaving devices designated 16 and side elevation with 17 and which are relatively spaced for receiving and sharpening a pencil.

The motor l() has connected therewith the feed wire 20, and feed line 21 leads to the point 22 at the end of supporting element 23 secured at 24 on the housing 25. Element 23 carries a contact element on the lower end thereof, at 23', and this contact cooperates with contact element 24 mounted on a resilient bracket comprising the upright` portion 26, and arms such as 27 between which rotatable device 28 is mounted. The bracket 26 is secured at 26 to bar or the like 29 and the latter is in turn secured within the housing in the manner shown in Figure 3.

A bracket 30 corresponding with the bracket previously referred to. is mounted opposite the latter, and in a reverse position,

so that the rotatable device 31 carried by I bracket 30 willbe in the position shown in Figure 3 and the rollers 28 and 31 will receive therebetween a pencil to be sharpened, the resilient bracket 26 being adapted to move to the left in Figure 3. in order t-o close contacts 23 and 24, upon the insertion of the pencil.

A wire 34 connects with contact 2l. and is also connected with motor 10, whereby a circuit is completed thru the motor for the purpose ot starting the latter automaticallv upon the insertion of a pencil in position to be sharpened. It will thus be observed that the operator has nothing to look after in the way of starting the motor or discontinuing its operation, for the contacts will cpen automatically as soon as the pencil is withdrawn. t A pencil-supporting element l) may be positioned as shown in Figure Al in alignment with the space, between the cutters. to be oc eupied by the pencil when in position for sharpening.

lVha-t is claimed is A pencil Sharpener including a support having spaced rotatable cutting elements driven by an electrical motor provided with an electrical circuit connected to an electrical source, a transverse bracket secured to said support below the cutting elements, verticallv disposed resilient arms carried bv the bracket and arranged to receive a pencil when inserted between the cutting elements and adapted to be flexed by said pencil, rollers journaled to said arms to be engaged by the pencil, and spaced resilient contacts in 5 the circuit to normally break the latter and one contact secured to the sup ort and the other contact carried by one o the resilient arms, said contact brou ht into engagement by the pencil flexing t e last named arm lo when inserted between the cutting elements. In testimony whereof I aliix my signature.

HERMAN SCHULTZ. 

